Quadrilaterals and their properties Class activity Play

Quadrilaterals and their properties Whiteboard presentation Play

Radiation Animation Play

Radio Animation Play

Radio waves Student activity Play

Radio waves Animation Play

Radioactivity Student activity Play

Reactions of complex ions Student activity Play

Reading properties of the cosine from the graph Whiteboard exercise Play

Reading properties of the sine from the graph Student activity Play

Reading properties of the sine from the graph Whiteboard exercise Play

Rectifier Student activity Play

Rectifier Whiteboard exercise Play

Reducing properties of simple sugars Animation Play

Reflecting telescope Whiteboard exercise Play

Reflecting telescope Student activity Play

Refracting telescope Student activity Play

Relative abundance of isotopes and mass spectra Student activity Play

Repulsion between current-carrying conductors Animation Play

Right hand rule Animation Play

Secondary data Student activity Play

Selected physical properties of oxides Chart Play

Some properties of division Animation Play

Some properties of division Student activity Play

Some properties of division – a factor of a sum Animation Play